| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce power consumption while maintaining accuracy in calculation of a travel path. <P>SOLUTION: An absolute position detection unit 30 detects anchor points of a mobile terminal 100. A link information generation unit 22 obtains a line segment (link) where the mobile terminal has moved until the terminal turns. A travel path calculation unit 24 calculates a link angle (a predetermined direction) based on the anchor points detected by the absolute position detection unit 30 while the mobile terminal moves on the link obtained by the link information generation part 22 and calculates a travel path of the mobile terminal from the link angle and a linear traveling distance. Then, if a plurality of the anchor points are detected at the absolute position detection unit while the mobile terminal moves on one link, the travel path calculation unit increases respective weighting coefficients k<SB POS="POST">j</SB>of a plurality of anchor points so that the magnitude of the increase is larger as the timing at which an anchor point is detected is later, in calculation of the link angles. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
